1 files changed, 63 insertions, 0 deletions
diff --git a/packages/connect/test/ws_orderbook_channel_test.ts b/packages/connect/test/ws_orderbook_channel_test.ts
new file mode 100644
index 000000000..79100d0e2
--- /dev/null
+++ b/packages/connect/test/ws_orderbook_channel_test.ts
@@ -0,0 +1,63 @@
+import * as chai from 'chai';
+import * as dirtyChai from 'dirty-chai';
+import * as _ from 'lodash';
+import 'mocha';
+import * as WebSocket from 'websocket';
+
+import { WebSocketOrderbookChannel } from '../src/ws_orderbook_channel';
+
+chai.config.includeStack = true;
+chai.use(dirtyChai);
+const expect = chai.expect;
+
+describe('WebSocketOrderbookChannel', () => {
+    const websocketUrl = 'ws://localhost:8080';
+    const client = new WebSocket.w3cwebsocket(websocketUrl);
+    const orderbookChannel = new WebSocketOrderbookChannel(client);
+    const subscriptionOpts = {
+        baseTokenAddress: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
+        quoteTokenAddress: '0xef7fff64389b814a946f3e92105513705ca6b990',
+        snapshot: true,
+        limit: 100,
+    };
+    const emptyOrderbookChannelHandler = {
+        onSnapshot: () => {
+            _.noop();
+        },
+        onUpdate: () => {
+            _.noop();
+        },
+        onError: () => {
+            _.noop();
+        },
+        onClose: () => {
+            _.noop();
+        },
+    };
+    describe('#subscribe', () => {
+        it('throws when subscriptionOpts does not conform to schema', () => {
+            const badSubscribeCall = orderbookChannel.subscribe.bind(
+                orderbookChannel,
+                {},
+                emptyOrderbookChannelHandler,
+            );
+            expect(badSubscribeCall).throws(
+                'Expected subscriptionOpts to conform to schema /RelayerApiOrderbookChannelSubscribePayload\nEncountered: {}\nValidation errors: instance requires property "baseTokenAddress", instance requires property "quoteTokenAddress"',
+            );
+        });
+        it('throws when handler has the incorrect members', () => {
+            const badSubscribeCall = orderbookChannel.subscribe.bind(orderbookChannel, subscriptionOpts, {});
+            expect(badSubscribeCall).throws(
+                'Expected handler.onSnapshot to be of type function, encountered: undefined',
+            );
+        });
+        it('does not throw when inputs are of correct types', () => {
+            const goodSubscribeCall = orderbookChannel.subscribe.bind(
+                orderbookChannel,
+                subscriptionOpts,
+                emptyOrderbookChannelHandler,
+            );
+            expect(goodSubscribeCall).to.not.throw();
+        });
+    });
+});